<div class="el-input-number" ng-class="[ disabled ? 'is-disabled' : '', size ? 'el-input-number--' + size : '' ]">
  <span class="el-input-number__decrease" ng-click="decrease()" ng-class="{'is-disabled': isMin}">-</span>
  <div class="el-input" ng-class="[ size ? 'el-input--' + size : '' ]">
    <input class="el-input__inner" ng-model="ngModel" ng-change="validate()"
      ng-disabled="disabled === 'true'">
  </div>
  <span class="el-input-number__increase" ng-click="increase()" ng-class="{'is-disabled': isMax}">+</span>
</div>